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Finding the Fourth Proportional to 29,674.60, 40,965.54 and 20,292.20

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Solution

The fourth proportional to 29,674.60, 40,965.54 and 20,292.20 is: 28,013.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,674.60 : 40,965.54 = 20,292.20 : x
  2. Step 2: Convert to fraction form
    29,674.60/40,965.54 = 20,292.20/x
  3. Step 3: Cross multiply
    29,674.60x = 40,965.54 × 20,292.20
  4. Step 4: Simplify right side
    29,674.60x = 831,280,930.79
  5. Step 5: Solve for x
    x = 831,280,930.79/29,674.60
  6. Step 6: Final answer
    x = 28,013.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.